length. Patch by Ivan Gyurdiev <ivg2@cornell.edu>.
* debug/confstr_chk.c: New file.
* debug/getdomainname_chk.c: New file.
* debug/getgroups_chk.c: New file.
* debug/gethostname_chk.c: New file.
* debug/getlogin_r_chk.c: New file.
* debug/ttyname_r_chk.c: New file.
* posix/bits/unistd.h: Add definitions for new debug versions.
* debug/tst-chk1.c: Add tests for new functions.
* debug/Versions: Export new functions.
* debug/Makefile (routines): Add new files.
* stdlib/bits/stdlib.h: Fix typo.
* manual/Makefile (libc/index.html): Depend on dir-add.texi.